DE69902809D1 - METHOD AND DEVICE FOR SYNCHRONIZING USING PARTIAL SEQUENCE CORRELATION - Google Patents

METHOD AND DEVICE FOR SYNCHRONIZING USING PARTIAL SEQUENCE CORRELATION

Info

Publication number
DE69902809D1
DE69902809D1 DE69902809T DE69902809T DE69902809D1 DE 69902809 D1 DE69902809 D1 DE 69902809D1 DE 69902809 T DE69902809 T DE 69902809T DE 69902809 T DE69902809 T DE 69902809T DE 69902809 D1 DE69902809 D1 DE 69902809D1
Authority
DE
Germany
Prior art keywords
correlation
modulation sequence
subsequence
minimum
synchronizing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69902809T
Other languages
German (de)
Other versions
DE69902809T2 (en
Inventor
Essam Sourour
E Bottomley
David Koilpillai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ericsson Inc
Original Assignee
Ericsson Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ericsson Inc filed Critical Ericsson Inc
Publication of DE69902809D1 publication Critical patent/DE69902809D1/en
Application granted granted Critical
Publication of DE69902809T2 publication Critical patent/DE69902809T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
    • H04B1/70752—Partial correlation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/15—Correlation function computation including computation of convolution operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/7077—Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Mathematical Analysis (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Algebra (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A receiver in a communications system is operated by receiving a radio communications signal transmitted by a station of the communications system and generating a correlation output representing a correlation of the received radio communications signal and a subsequence of a modulation sequence that is selected based on a correlation between the selected subsequence and the modulation sequence. The receiver is then synchronized based on the generated correlation output. The selected subsequence preferably has an optimal out-of-phase correlation with the modulation sequence. According to an aspect of the present invention, the selected subsequence has a minimum out of phase correlation with the modulation sequence in comparison to other subsequences of the modulation sequence. For example, the selected subsequence may have a "minimum maximum" out-of-phase correlation value, a "minimum aggregate" out-of-phase correlation metric, or a combination thereof.
DE69902809T 1998-11-17 1999-10-12 METHOD AND DEVICE FOR SYNCHRONIZING USING PARTIAL SEQUENCE CORRELATION Expired - Fee Related DE69902809T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/193,583 US6421371B1 (en) 1998-11-17 1998-11-17 Modulation sequence synchronization methods and apparatus employing partial sequence correlation
PCT/US1999/023941 WO2000030271A1 (en) 1998-11-17 1999-10-12 Synchronization method and apparatus employing partial sequence correlation

Publications (2)

Publication Number Publication Date
DE69902809D1 true DE69902809D1 (en) 2002-10-10
DE69902809T2 DE69902809T2 (en) 2003-01-16

Family

ID=22714226

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69902809T Expired - Fee Related DE69902809T2 (en) 1998-11-17 1999-10-12 METHOD AND DEVICE FOR SYNCHRONIZING USING PARTIAL SEQUENCE CORRELATION

Country Status (11)

Country Link
US (1) US6421371B1 (en)
EP (1) EP1131899B1 (en)
JP (1) JP2002530926A (en)
CN (1) CN1326621A (en)
AT (1) ATE223631T1 (en)
AU (1) AU6298999A (en)
DE (1) DE69902809T2 (en)
IL (1) IL143168A0 (en)
MY (1) MY124380A (en)
PL (1) PL347692A1 (en)
WO (1) WO2000030271A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3695732B2 (en) * 1998-09-02 2005-09-14 富士通株式会社 Search device for CDMA receiver
US7085246B1 (en) * 1999-05-19 2006-08-01 Motorola, Inc. Method and apparatus for acquisition of a spread-spectrum signal
DE19961557A1 (en) * 1999-12-20 2001-07-05 Infineon Technologies Ag Method and device for synchronizing a mobile radio receiver with a time slot structure of a received radio signal
SE0001998D0 (en) * 2000-05-29 2000-05-29 Siemens Elema Ab Method and device for correlating signals
GB0102528D0 (en) * 2001-01-31 2001-03-21 Tristram James Wheel lights
US7603081B2 (en) * 2001-09-14 2009-10-13 Atc Technologies, Llc Radiotelephones and operating methods that use a single radio frequency chain and a single baseband processor for space-based and terrestrial communications
US20050002442A1 (en) * 2003-07-02 2005-01-06 Litwin Louis Robert Method and apparatus for detection of Pilot signal with frequency offset using multi-stage correlator
KR100555661B1 (en) * 2004-06-23 2006-03-03 삼성전자주식회사 Carrier frequency offset detector of digital receiver and frequency offset detecting method thereof
US7339976B2 (en) * 2005-07-18 2008-03-04 Motorola, Inc. Method and apparatus for reducing power consumption within a wireless receiver
US7865158B2 (en) * 2005-07-26 2011-01-04 Interdigital Technology Corporation Method and apparatus for automatically correcting receiver oscillator frequency
US8014379B2 (en) * 2007-09-28 2011-09-06 St-Ericsson Sa Correlation of access code for bluetooth synchronization
GB201410641D0 (en) * 2014-06-13 2014-07-30 Nordic Semiconductor Asa Radio communication
WO2017167366A1 (en) * 2016-03-31 2017-10-05 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Optimized preamble and method for interference robust packet detection for telemetry applications
EP4099054B1 (en) * 2020-02-25 2024-04-03 Mitsubishi Electric Corporation Wireless ranging system
JP7146878B2 (en) * 2020-11-19 2022-10-04 フラウンホッファー－ゲゼルシャフト ツァ フェルダールング デァ アンゲヴァンテン フォアシュンク エー．ファオ Optimized Preamble and Method for Interference Robust Packet Detection for Telemetry Applications

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291409A (en) 1978-06-20 1981-09-22 The Mitre Corporation Spread spectrum communications method and apparatus
US4418393A (en) 1980-10-27 1983-11-29 Sperry Corporation Matched filter spread spectrum code recovery apparatus
US4538281A (en) 1982-05-06 1985-08-27 Rockwell International Corporation Adaptive acquisition of multiple access codes
FR2650456A1 (en) * 1989-07-28 1991-02-01 Trt Telecom Radio Electr CORRELATION SYNCHRONIZATION METHOD
FR2653286A1 (en) 1989-10-12 1991-04-19 Europ Agence Spatiale CODE ACQUISITION METHOD AND CIRCUIT FOR A SPREAD SPECTRUM SIGNAL RECEIVER.
US5048053A (en) 1989-11-20 1991-09-10 Unisys Corporation Detecting and tracking circuit for component PN codes
US5253268A (en) 1990-05-24 1993-10-12 Cylink Corporation Method and apparatus for the correlation of sample bits of spread spectrum radio signals
US5128957A (en) 1990-08-10 1992-07-07 Ricoh Company, Ltd. Initial acquisition method in spread spectrum system and such system
US5111478A (en) 1991-01-31 1992-05-05 Motorola, Inc. Method and apparatus for providing signal synchronization in a spread spectrum communication system
US5365550A (en) 1991-07-18 1994-11-15 Pulse Electronics, Inc. Initial synchronization and tracking circuits for spread spectrum receivers
US5579338A (en) 1992-06-29 1996-11-26 Mitsubishi Denki Kabushiki Kaisha Spread spectrum receiver using partial correlations
JP3212390B2 (en) 1992-11-17 2001-09-25 クラリオン株式会社 Sliding correlator
DE4318368C1 (en) 1993-05-28 1994-07-14 Siemens Ag Method for obtaining a signal indicating a failure of the synchronization between a pseudo random signal sequence of a transmitter and a reference pseudo random signal sequence of a receiver
US5768306A (en) 1993-09-06 1998-06-16 Ntt Mobile Communications Network, Inc. Sliding correlator used in CDMA systems to establish initial synchronization
WO1996004716A1 (en) 1994-07-29 1996-02-15 Qualcomm Incorporated Method and apparatus for performing code acquisition in a cdma communications system
JP3142222B2 (en) 1994-08-22 2001-03-07 松下電器産業株式会社 Spread spectrum communication synchronization method and circuit device thereof
US5717713A (en) 1994-11-18 1998-02-10 Stanford Telecommunications, Inc. Technique to permit rapid acquisition and alert channel signalling for base station-to-user link of an orthogonal CDMA (OCDMA) communication system
KR970011690B1 (en) 1994-11-22 1997-07-14 삼성전자 주식회사 Data receiver & transmitter of spread spectrum using pilot channel
US5654991A (en) 1995-07-31 1997-08-05 Harris Corporation Fast acquisition bit timing loop method and apparatus
US5642377A (en) 1995-07-25 1997-06-24 Nokia Mobile Phones, Ltd. Serial search acquisition system with adaptive threshold and optimal decision for spread spectrum systems
JPH0946174A (en) 1995-07-31 1997-02-14 Sharp Corp Filter circuit
US5805648A (en) 1995-07-31 1998-09-08 Qualcomm Incorporated Method and apparatus for performing search acquisition in a CDMA communication system
US5696762A (en) 1996-03-25 1997-12-09 Stanford Telecommunications, Inc. Rapid-acquisition access channel scheme for CDMA systems
US5781543A (en) * 1996-08-29 1998-07-14 Qualcomm Incorporated Power-efficient acquisition of a CDMA pilot signal
US6097770A (en) * 1996-10-31 2000-08-01 Lucent Technologies Inc. Frequency offset estimation for wireless systems based on channel impulse response
US6215798B1 (en) * 1996-11-01 2001-04-10 Telefonaktiebolaget Lm Ericsson (Publ) Multi-frame synchronization for parallel channel transmissions
IL120555A (en) * 1997-03-30 2000-06-01 D S P C Israel Ltd Code synchronization unit and method
US6377615B1 (en) * 1999-09-30 2002-04-23 Ericsson Inc. Apparatus and methods for receiving information using variable length accumulation searchers

Also Published As

Publication number Publication date
EP1131899B1 (en) 2002-09-04
JP2002530926A (en) 2002-09-17
US6421371B1 (en) 2002-07-16
AU6298999A (en) 2000-06-05
MY124380A (en) 2006-06-30
WO2000030271A1 (en) 2000-05-25
CN1326621A (en) 2001-12-12
IL143168A0 (en) 2002-04-21
EP1131899A1 (en) 2001-09-12
ATE223631T1 (en) 2002-09-15
DE69902809T2 (en) 2003-01-16
PL347692A1 (en) 2002-04-22

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee